Registration Dossier
Registration Dossier
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EC number: 226-241-3 | CAS number: 5332-73-0
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance has a low octanol water partition coefficient and the adsorption potential of this substance is related to this parameter
- Endpoint:
- adsorption / desorption
- Remarks:
- other: calculation of log Koc for ionized molecule
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- GLP compliance:
- no
- Type:
- Koc
- Value:
- 26
- Remarks on result:
- other: pH 5.0
- Type:
- log Koc
- Value:
- 1.41
- Remarks on result:
- other: pH 5.0
- Type:
- Koc
- Value:
- 26
- Remarks on result:
- other: pH 7.0
- Type:
- log Koc
- Value:
- 1.41
- Remarks on result:
- other: pH 7.0
- Validity criteria fulfilled:
- not specified
- Conclusions:
- The Koc of the substance was calculated following Franco & Trapp (2008) to be 26.0 (logKoc = 1.41) at pH 5 and 7.
Referenceopen allclose all
Description of key information
Following the low octanol water partition coefficient (log Pow = -0.50) of the substance, no significant adsorption is expected. The Koc was calculated to be 26.0 L/kg (log Koc = 1.41) following Franco & Trapp (2008).
Key value for chemical safety assessment
- Koc at 20 °C:
- 26
Additional information
Based on the relatively low log Pow no significant adsorption to soil or sediment is expected. For any further assessment, a log Koc of 1.41 (pH 5 and 7) for the ionized molecule was calculated according to Franco & Trapp (2008) using a pKa of 10.4 and a log Pow of -0.50 (uncharged molecule) as input-parameter.
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